RIG-I promotes immune evasion of colon cancer by modulating PD-L1 ubiquitination ================================================================================ * Yangyang Zhang * Lingxiu Zeng * Meng Wang * Zhenwei Yang * Hailin Zhang * Liping Gao * Ranran Zhang * Jialong Liu * Wenqing Shan * Ying Chang * Lan Liu * Qiu Zhao * Yong Li * Jing Liu